public void GetAllQuizenCorrect()
        {
            var quizDTOs = new List <QuizDTO>();

            quizDTOs.Add(new QuizDTO
            {
                Id   = 1,
                Naam = "Quiz 1"
            });

            IQueryable <QuizDTO> queryableQuizDTOs = quizDTOs.AsQueryable();

            var quizModels = new List <QuizViewModelResponse>();

            foreach (var quiz in quizDTOs)
            {
                quizModels.Add(QuizViewModelMapper.MapQuizDTOToQuizViewModel(quiz));
            }

            //Arange
            quizService.Setup(x => x.GetAllQuizen()).Returns(queryableQuizDTOs);

            //Act
            var alleQuizen = controller.GetAll() as ObjectResult;
            var ListQuizen = alleQuizen.Value as List <QuizViewModelResponse>;


            //Assert
            Assert.That(ListQuizen.Count(), Is.EqualTo(quizModels.Count()));

            for (int i = 0; i < ListQuizen.Count(); i++)
            {
                Assert.That(ListQuizen.ToArray()[i].Id, Is.EqualTo(quizModels.ToArray()[i].Id));
                Assert.That(ListQuizen.ToArray()[i].Naam, Is.EqualTo(quizModels.ToArray()[i].Naam));
            }
        }